package thread;

import java.util.Scanner;

public class SleepDemo {
    public static void main(String[] args) {
        System.out.println("程序开始了...");
        Scanner scanner =new Scanner(System.in); 
        for (int i = scanner.nextInt(); i >0 ; i--) {
            try {
                Thread.sleep(1000);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
            System.out.println( i+"秒");
        }
        System.out.println("时间到");
        
        
        

    }
}
